Saw this around 1pm today in Toronto. I noticed some wavy-type clouds in the sky before I had stopped to get gas. While gassing up, I looked up at the sky again and saw this tearing across the sky pretty quickly. Sadly, I didn't take any video but I snapped this photo.

I only saw it for about a minute or so before it was out of sight. It just kept moving across the sky a little bit behind the wave clouds also pictured above.

How does an airliner turbulence have that much influence on the sky? Is that all from one plane or could it be from more than one? If it's of any help identifying it, it rained (not a severe storm) probably about 30-60 minutes after I saw it.

The wake vortex of the wingtips of planes are really strong and can get huge. It looks to me like this is caused by the vortex off the inside wing. Since the airplane was turning only the inside vortex would effect the cloud, pushing it down slightly.

Regardless of what triggered it, this is the environment that made its propagation possible. That modeled atmospheric profile indicates a strong temperature (red line) inversion, where a shallow cool layer of air is sitting beneath an overrunning warm layer. The inversion layer is stable like the surface of a pond and perturbations can spawn waves that resemble ripples in water.

They're called gravity waves, but this name can be confusing since atmospheric waves are influenced by gravity in the same fashion that water waves are.

Had to check with some colleagues, because these photos were difficult. These photos are of two separate cloud types. In pictures 1 and 2 the clouds are formed by gravity waves, and in pictures 1 and 4 they are contrails.

If that is a thunderstorm in the back-ground, that is an outflow boundary. Basically a mini-front from the cold downdraft from a thunderstorm as it moves away from the storm. when they collide with other outflow boundaries you can have rapid convection and increased potential for severe weather.